SME-08B21-23

Optical encoder IC

1. SME-08B Package outline drawing

General tolerance： ±0.1

SME-08B21-23_pin assign&Land pattern_DIMJ240011-DE240080-Preliminary-RLJ240011-E001

May.2024-1-SME-08B21-23

Optical encoder IC

2. Pin assignment

CH A

VDD_D

VDD_A

87

16

VSS_A

5SEL1

9CH B

2VSS_D
34CH ZSEL2Top View

Pin No.

Name

I/O

1

CHAO

2CHB

O

3CHZ

O

4

SEL2I

5

SEL1I

6

VSS_A-7

VDD_A-

8VDD_D-

9

VSS_D-【I/O type】I：Input signal

Description
A-phase digital incremental signal
B-phase digital incremental signal
Z-phase digital signal output
Interpolation setting input2
Interpolation setting input1
Analog GroundAnalog supply voltage
Digital supply voltage
Digital Ground
O：Output signal

SME-08B21-23_pin assign&Land pattern_DIMJ240011-DE240080-Preliminary-RLJ240011-E001

May.2024-2-

SME-08B21-23

Optical encoder IC

3. Recommended land pattern

General tolerance：±0.1

SME-08B21-23_pin assign&Land pattern_DIMJ240011-DE240080-Preliminary-RLJ240011-E001

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SME-08B21-23

Optical encoder IC

Please pay your attention to the following points at time of using the products shown in this document.
1. The products shown in this document (hereinafter” Products”) are designed and manufactured to the generally accepted
standards of reliability as expected for use in general electronic and electrical equipment, such as personal equipment,machine tools and measurement equipment. The Products are not designed and manufactured to be used in any otherspecial equipment requiring extremely high level of reliability and safety, such as aerospace equipment, nuclear power
control equipment, medical equipment, transportation equipment, disaster prevention equipment, security equipment.
The Products are not designed and manufactured to be used for the apparatus that exerts harmful influence on the human
lives due to the defects, failure or malfunction of the Products.
If you wish to use the Products in that apparatus, please contact our sales section in advance.
In the event that the Products are used in such apparatus without our prior approval, we assume no responsibility
whatsoever for any damages resulting from the use of that apparatus.
2. NPC reserves the right to change the specifications of the Products in order to improve the characteristics or reliability
thereof.
3. The information described in this document is presented only as a guide for using the Products. No responsibility is
assumed by us for any infringements of patents or other rights of the third parties which may result from its use. No
license is granted by implication or otherwise under any patents or other rights of the third parties. Then, we assume
no responsibility whatsoever for any damages resulting from those infringements.
4. The constant of each circuit shown in this document is described as an example, and it is not guaranteed about its valueof the mass production products.
5. In the case of that the Products in this document falls under the foreign exchange and foreign trade control law or otherapplicable laws and regulations, approval of the export to be based on those laws and regulations are necessary.
Customers are requested appropriately take steps to obtain required permissions or approvals from appropriate
government agencies.
6. When exporting customer’s products that use the Products, customers must comply with the "Foreign Exchange andForeign Trade Act" and other export-related laws and regulations, and follow the necessary procedures in accordancewith those laws and regulations. Do not use the Products in equipment whose sale is prohibited by export-related lawsand regulations ("JP Foreign Exchange and Foreign Trade Act" and "US Export Administration Regulations", etc.). In
addition, please do not sell the Products to users who are expected to use it for the above equipment or companies in its
supply chain. If a user who uses module parts and equipment using the Products is a company suspected of violating
human rights, please do not sell the above parts and equipment to that user.

SEIKO NPC CORPORATION
2-9-4, Taito, Taito-ku, Tokyo
110-0016, Japan
Telephone: +81-3-6747-5300
Facsimile: +81-3-6747-5303
https://www.npc.co.jp/Email: sales@npc.co.jp

SME-08B21-23_pin assign&Land pattern_DIMJ240011-DE240080-Preliminary-RLJ240011-E001

May.2024-4-